Displacing of sodium between Voronoi O-centered polyhedrons in sodium tetrasilicate glass L. T. San, N. V. Yen, N. T. Thao, P. K. Hung and Fumiya Noritake Eur. Phys. J. B, 94 12 (2021) 241 Published online: 10 December 2021 DOI: 10.1140/epjb/s10051-021-00243-3